Foliar fungal endophyte community structure is independent of phylogenetic relatedness in an Asteraceae common garden.

Autor: Whitaker BK; Department of Biology Indiana University Bloomington IN USA., Christian N; Department of Biology Indiana University Bloomington IN USA.; Department of Biology University of Louisville Louisville KY USA., Chai Q; Department of Biology Indiana University Bloomington IN USA.; School of Pastoral Agriculture Science and Technology Lanzhou University Lanzhou China., Clay K; Department of Biology Indiana University Bloomington IN USA.; Department of Ecology and Evolutionary Biology Tulane University New Orleans LA USA.
Jazyk: angličtina
Zdroj: Ecology and evolution [Ecol Evol] 2020 Nov 26; Vol. 10 (24), pp. 13895-13912. Date of Electronic Publication: 2020 Nov 26 (Print Publication: 2020).
DOI: 10.1002/ece3.6983
Abstrakt: Phylogenetic distance among host species represents a proxy for host traits that act as biotic filters to shape host-associated microbiome community structure. However, teasing apart potential biotic assembly mechanisms, such as host specificity or local species interactions, from abiotic factors, such as environmental specificity or dispersal barriers, in hyperdiverse, horizontally transmitted microbiomes remains a challenge. In this study, we tested whether host phylogenetic relatedness among 18 native Asteraceae plant species and spatial distance between replicated plots in a common garden affects foliar fungal endophyte (FFE) community structure. We found that FFE community structure varied significantly among host species, as well as host tribes, but not among host subfamilies. However, FFE community dissimilarity between host individuals was not significantly correlated with phylogenetic distance between host species. There was a significant effect of spatial distance among host individuals on FFE community dissimilarity within the common garden. The significant differences in FFE community structure among host species, but lack of a significant host phylogenetic effect, suggest functional differences among host species not accounted for by host phylogenetic distance, such as metabolic traits or phenology, may drive FFE community dissimilarity. Overall, our results indicate that host species identity and the spatial distance between plants can determine the similarity of their microbiomes, even across a single experimental field, but that host phylogeny is not closely tied to FFE community divergence in native Asteraceae.
Competing Interests: We have no competing interests to declare.
(© 2020 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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